4 
KENDALL: NEW ENGLAND CHARRS. 
forms, or more particularly Lake Champlain species, from the region east of the mountains. 
But there are species common to the two regions, as well as distinct species in each. 
Of the representatives of the southern extension of Canadian fauna, the charrs are the most 
common and characteristic. The Common Trout {Salvelinus fontinalis), while it has not so 
wide a distribution as the Lake Trout, is the most common form within its range, particularly 
in New England. The remainder of the charrs in New England seem to be restricted to but few 
localities and these somewhat isolated and remote from each other and from the northern region 
where related forms are more commonly distributed. They probably are the remains of a once 
more general distribution, having vanished from all but the present localities owing to un- 
favorable changes in the conditions. However, other localities in New England may yet reveal 
them, for it was only within a comparatively recent time that some of the forms were dis- 
covered. These forms are so closely related to other nominal species that they may be 
considered as one group whose geographical distribution encircles the northern hemisphere 
limited on the north only by the perpetual polar ice. 
The beneficence of the Trustees of the Bache Fund made the illustrations of this part 
possible, for which the author here desires to express his grateful appreciation. The paintings 
were made by the painstaking artist, Walter H. Rich, of Portland, Maine, of whose work the 
only possible criticism is that it is too conscientiously true to life. 
Washington, D. C. 
December, 1913. 
